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ratelena [41]
2 years ago
13

Questions

Chemistry
1 answer:
Anni [7]2 years ago
7 0

Gallium is the element that belongs to the group 3 and the fourth period. Ga is symbol of Gallium.

  • The element gallium has an atomic number of 31.
  • While highly pure gallium is covered in a dazzling silvery colour, solid gallium is a blue-grey metal with an orthorhombic crystalline structure.
  • It is a crucial part of numerous semiconductors. Due to its capacity to transform power into light, it is additionally used in red LEDs (light emitting diodes).
  • Because of its high boiling point, it is perfect for recording temperatures that would cause a thermometer to vaporise.
  • From iron pyrites, zinc blende, germanite, and bauxite, this metal can be readily removed as a byproduct.
  • Because gallium is a corrosive chemical, it can cause serious skin and eye burns asse well as significant irritation.

Learn more about semiconductors here

brainly.com/question/1918629

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What is the mass in grams for 7.14x10^3 mol of PCI3?
Shalnov [3]

Answer:

980,536.2 grams

Explanation:

The mass of a compound is equal to its moles times its molar mass.

The molar mass of PCl3 is 137.33 g/mol

137.33 x 7.14 x 10^3 = 980,536.2

3 0
2 years ago
Which is a characteristic of mixtures?
anygoal [31]

Answer: They can be separated by physical processes

Explanation:

Element is a pure substance which is composed of atoms of similar elements.It can not be decomposed into simpler constituents using chemical reactions.Example: Copper Cu

Compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.It can be decomposed into simpler constituents using chemical reactions. Example: water H_2O

Mixture is a substance which has two or more components which do not combine chemically and do not have any fixed ratio in which they are present.they can be separated by physical processes. Example: salt in water. It can be separated by evaporation which is a physical process.

5 0
3 years ago
A basketball weighs approximately 1.35 kg. What is this mass in grams (g)?<br><br> step by step
choli [55]

Answer:

1350 g

Explanation: just add a 0

8 0
3 years ago
What is the volume of a liquid that has a density 3.65g/ml and a mass of 5.61g
Lorico [155]

Answer:

<h2>1.54 mL</h2>

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

volume =  \frac{mass}{density} \\

From the question we have

volume =  \frac{5.61}{3.65}  \\  =1.536986...

We have the final answer as

<h3>1.54 mL</h3>

Hope this helps you

3 0
3 years ago
How many hydrogen atoms are in 105 g of water?
mel-nik [20]
Moles of water atoms = mass/molecular weight = 105/18 = 5.83 mol. Number of moles of hydrogen in water = 2 x moles of water = 11.66. Number of H atoms in water = moles of hydrogen x 6.02 x 10^23 = 7.019 x 10^24 ~ 7.02 x 10^24 atoms. Hope this helps.
3 0
3 years ago
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